Before the advent of K-pop, the Kim Sisters rocked America’s postwar music scene with their colorful tunes, zestful tones and exotic eyes.

The trio starred on the Ed Sullivan Show more than 22 times with the likes of Elvis Presley, The Beatles and The Rolling Stones. Poster children of Korea’s postwar pop, they were the first Asian girl group to debut in Las Vegas and introduce the unknown country’s charming voices to American audiences throughout the 1960s and ‘70s.

The group comprised of Kim Sook-ja, Kim Ae-ja and Kim Min-ja, who were born into a musical family. The mother of Ae-ja and Sook-ja was Lee Nan-young, a singer with a rock-star fame popular for the 1953 song “Mokpo’s tears,” and their father was renowned composer Kim Hae-song. Min-ja was their cousin.

Korea-born singer Kim Min-ja (center) performs beside her husband Tommy Vig (left), a Hungarian American jazz musician who fled Hungary during the 1956 revolution and settled in the US, at a screening of the film “Try to Remember” at Arthouse Momo at Ewha Womans University in Seoul on Jan. 20. (Joel Lee/The Korea Herald)

During her peripatetic years on the road in America, Min-ja met her husband Tommy Vig, a jazz musician from Hungary who fled his country during the revolution and freedom struggle of 1956.

“Under the Soviet communist rule, many Hungarians covertly listened to American radio and kindled their desires to live in a free country,” Min-ja said at a screening of the film “Try to Remember” at Arthouse Momo at Ehwa Womans University in Seoul on Jan. 20.

“In this way, jazz struck chords with Hungarians and ignited their spirit of independence,” the 77-year-old woman added.

The documentary film, which premiered in theaters across Korea last week, was directed by Kim Dae-hyun, who travelled to the US and Hungary to glean data and interview people. It illuminates the life of the sisters in the US, Korea and Hungary, projecting grayscale clips of their performances in technicolor clothing and makeup.

Korea-born singer Kim Min-ja (Yonhap)

“We grew up in a musical family and were endowed with the gift of music in our upbringing,” Ae-ja told reporters, adding she always thought of music as her “destiny.”

To prevent making mistakes in America, where they spoke poor English and felt unfamiliar, the three women wore the same clothes and walked everywhere in step, she said.

“But we all tried to sing with our own voices without trying to imitate other famous singers.”

With frequent flashbacks to their golden years, at a time of Korea’s arduous economic development, the movie plays their popular hits such as “Try to remember,” “Charlie Brown,” “Michael row the boat ashore,” “Swanee,” “Arirang” and “Kimchi Kkakdoogi.”

“Over the past several months, we Hungarians around the globe have paid our respect to the memory of our revolution,” said Hungarian Ambassador to Korea Gabor Csaba before the screening. “In 1956, Hungarians said ‘no’ to the communist dictatorship and clearly expressed their desire to live in freedom and liberty.”

The event also featured the Hungarian film “Children of Glory,” a 2006 movie directed by Krisztina Goda, which commemorates the revolution and the “Blood in the Water” match between Hungary and the Soviet Union at the 1956 Melbourne Olympics.

Hungary’s struggle for freedom, which was eventually crushed by Soviet troops, “deeply touched” Koreans, the envoy said, noting it inspired poet Kim Chun-soo (1922-2004) to write the poem “The Death of a Girl in Budapest.”

A group of students at Yonsei University also formed a voluntary militia to lend help to the resistance, led by the late Lee Man-seop (1932-2015), former speaker of the Korean Parliament.